Employment (2) Occupations (2) Trabajo (2) Travail (2) Travail (2) travail (2) Seedlings (1) Trees (1) State, The (1) Rubber (1) Rate of return (1) Production (Economic theory) (1) Plants (1) Plantations (1) Perspective (1) Mediation (1) Latex (1) Industrial relations (1) Hevea (1) Evidence (1) Ethnology (1) Embargo (1) Phlebotomy (1) Agricultural engineering (1) Technique (1) Planting (1) Longevity (1) Relaciones humanas en el trabajo (1) Heveas (1) Plantaciones (1)